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No root rot = no fungal outbreak problems and your pic of your roots tells the tale. There are many, many growers that can only wish they could prevent root rot as well as you have all your life, but many just can't keep the "rot" away for some reason. They just can't do it and that's sad and...

Old Med - I'm sure you have tested you DO Saturation... what is yor actual DO Saturation using bubblers and what is your actual water temp when the DO is tested? Just wondering.

whitey - Ideally, I like space for 9-10 mature RDWC plants, 60 gallons water/nutrient recirculating, room temp and water constant 80F – 86F (keep plant and microbial metabolism on the high side), DO Sat 100% continuously, water pump 30 minutes on/off per hour, 12 V DC battery and DC water pump…...

OldMed, now those are GREAT looking roots for sure. No doubt, you’re an expert grower and I’m sure your end product will be excellent. You have mastered the art and done it cost effectively too, no expensive frills, buzzers and alarms on your farm. Clearly your rez water quality is excellent...

Hey R- A full blown “good” bacteria culture demands a lot of oxygen. A lot of air never insure a lot of oxygen. Air is mostly composed of nitrogen with a little oxygen and CO2 of course. Ideally for optimal bacterial culture health and root ball health, sustained 100% DO saturation is...

Don’t feel bad because many growers deal with those same ole noisy O2 pumps like yours 24/7 every day/all the time, but you adapt and learn to live with this pump noise and vibration… just a step for a stepper so to speak. O2 by electrolysis is really different. This O2 is totally quiet, no...

New Fact: At the top of Mt. Everest Contrary to popular belief [and misconception] the percentage of oxygen in the air doesn’t change significantly with altitude up to about 85km (52.8 miles) from the earth! http://www.vmeverest09.com/oxygen-at-altitude/

Hay – “Purple Haze”, the classic example of the drug induced logic, hallucinations, meaningless rambling... Example: So what DO Saturation is enough in your unscientific opinion? This is “Oxygen” - https://en.wikipedia.org/wiki/Oxygen This is “Air” - https://simple.wikipedia.org/wiki/Air...

This little root disease is as common as rain and failure to prevent it is normal. You must admit that the root rot is a very popular topic on many hydro pot growing forums. The root rot is always such a hot topic and treatment is the word on the street is always treatment, not prevention...

Another opinion about oxygen Nutrients for hydroponic systems Dissolved oxygen DO http://www.homehydrosystems.com/nutrients/oxygen_page.html A hydroponic nutrient solution is not just a mix of fertilizer salts and water. One of the most important of these is dissolved oxygen (DO), which is...

Have you ever actually tested DO % saturation in your nutrient water? Or just go by a DO sat chart based on air and water temperature? All I see here is company sales literature pushing cold water and water chillers. Nothing here about what “Low DO sat” is or what “high DO sat” is. Not much to...

Just wondering…What do you mean by “extra oxygen?” What DO saturations do you consider "high oxygen levels?" Do you have a % saturation number in mind or any cannabis research that identifies what "high oxygen levels" actually means. That's a good idea for a research project, maybe someone has...

Thanks for your opinion. Many hobbyist say that aerobes probably do need some O2, maybe a little O2, maybe a lot O2. I have looked and found no scientific research specifically about O2 requirements for RDWC cannabis root zone or nutrient solution. I will keep looking for published material...

I believe you right, the air stone regardless of the price of the stone is not the solution to this problem and never will be the solution. This is interesting: What’s your opinion on this piece? How do I identify and prevent Root Rot...

Many hobbyist are often confronted with Pythium and other fungal outbreaks. Hobbyist have basically 3 choices when it comes to catching a dose of the Pythium and or other fungal root rot diseases… Prevent the disease, treat the disease or trash the whole project, disinfect the farm and...

Say you cough alot, smoke a lot… might have caught yourself a dose of the Emphysema/COPD, eh old man…

Dissolved Oxygen (DO) http://www.homehydrosystems.com/nutrients/oxygen_page.html Perhaps one of the commonest problems in hydropnic systems is the Pythium pathogen. What many growers do not realize is that Pythium, being an “opportunist” fungi, often takes advantage of plants which have been...

The plant gets stressed, releases stress chemicals, that alerts the fungi that the feast is near signaling "dead cells and brown slime." Abundant fungus food is available to eat... and the fungi feast in on. Maintain healthy plants and there is nothing for Pythium and other fungi to eat...

No disease means you are keeping your plants healthy, Great job. This is a difficult task for many growers. Root rot and other plant diseases do not attack healthy plants that are not t stressed and release stress chemicals, Fungal disease outbreaks only occur in plants that release these stress...

Keep running your mouth old man.